Spring structure



Oct. 19, 1943. v. ASARO 2,332,042

S:RING STRUCTURE Filed April 28, 1942 I N VEN TOR. 2 Wfa /75'0/"0Patented Oct. 19, 1943 SPRING STRUCTURE Vito Asaro, Detroit, Mich,assignor to L. A. Young Spring and Wire Corporation, Detroit, Mich, a

corporation of Michigan Application April 28, 1942, Serial No. 440,800

4 Claims. ('01. 5-264) This invention relates to improvements in springstructures.

The main objects of this invention are:

First, to provide an improved spring structure of the type in which thesprings are mounted upon cross strips in which the cross strips may befabricated of relatively light sheet metal stock, at the same time arevery rigid and one to which the springs are easily and quickly secured.

Second, to provide a structure of this type in which the springs are ormay be quickly and easily mounted upon and secured to the supportingstrip or member in a manner that prevents loosening or rattling and atthe same time holds the spring in upright position.

Third, to provide a structure having these advantages in which thesprings can be assembled uponan associated supporting strip without theaid of tools.

Objects relating to details and economies of the invention will appearfrom the description to follow. The invention is defined and pointed outin the claims.

A preferred embodiment of the invention is illustrated in theaccompanying drawing, in which:

Fig. 1 is a fragmentary perspective view of a supporting strip with a,spring mounted thereon in accordance with my invention.

Fig. 2 is a fragmentary inverted view of the structure shown in Fig. 1.

Fig. 3 is a fragmentary longitudinal section on line 33 of Fig. 2.

Fig. 4 is a fragmentary inverted view corresponding to that of Fig. 2showing certain steps of the mounting of the springs upon the support.

Fig. 5 is a fragmentary view showing the relation of the bottom coils ofthe spring prior to mounting upon the supporting strip.

In the accompanying drawing, I have only shown a fragment of asupporting strip and a single spring, but it will be understood thatcommonly the springs are mounted upon a supporting strip which issuitably conformed at its end for mounting upon a frame. As suchmounting features are well known in the art and vary according to thetype of structure in which the supporting strip and its springs are tobe used I have not deemed it necessary to illustrate the same.

The supporting strip of my invention designated generally by the numeralI comprises a downwardly facing channel 2 and an upwardly facing channel3, these channel having the common intermediate leg 4. The channel 2 ispreferably substantially wider than the channel 3 to provide aneffective fit for the helically coiled spring 5 as will hereinafterappear.

The web 6 of the downwardly facing channel has a loop I struck uptherefrom while the com-' mon leg 4 of the supporting strip has asomewhat elongated hole 8 therein, longitudinally spaced relative to theloop I.

The bottom coil 9 of the spring terminates in a, straight angularlydisposed portion I0. This bottom coil 9 is threaded through the loop Iand its terminal portion Iii is threaded through the hole 8 with theangle II thereof engaging the edge I2 of the hole adjacent the loop.This may be effected by a rotative or threading movement of the springon its axis, the hole 8 being of such longitudinal dimension as topermit the tip of the terminal portion I a to freely enter the holelHowever, continued rotation of the spring brings the side I3 of theterminal portion into engage ment with the edge I2 of-the hole and underincreasing stress as the rotation continues, so that the bottom coil isplaced under spring stress. This relation of the parts is furtherillustrated in Fig. 4 where the tip terminal is about to enter the hole8. The bottom coil is also under stress engagement with the outer leg I4of the upwardly facing channel.

When the spring is completely seated, the tip of its terminal portionengages the outer leg I5 of the downwardly facing channel, see Fig. 2.The bottom coil is also placed under axial stress which brings theportion l6 thereof opposite the loop 1 in tension engagement with thetop of the downwardly facing channel, see Figs. 1 and 3.

Initially, the pitch of the bottom coil is substantially the same asthat of the other coils, as shown in Fig. 5.

With this arrangement of parts, the springs may be very quickly mountedon the support and they are very securely retained against movementthereon and against any rattling or chafing and they may be engagedWithout the aid of tools and without excessive efiort on the part of theworkman as the Workman can grasp the spring of the top coil, or Wellabove the top coil and easily manipulate the spring to engage it withthe support, as I have described.

I have illustrated and described my invention in an embodiment which Iconsider highly satisfactory. I have not attempted to illustrate ordescribe various embodiments or adaptations which I contemplate as it isbelieved that this disclosure will enable those skilled in the art toembody or adapt my improvements as may be desired.

tion of a length corresponding approximatelyito the width of thedownwardly facing channel,

the bottom coil of the spring-beingthreaded through said loop with itsangularly disposed terminal portion disposed through said hole with itsangle engaging the: edge of the:h0le adjacent the loop under tension andits tip engaging the inner side of the outer legof the i:

downwardly facing a channel. saidbottom coil :be

tween said loopia-ndi 11611673150; engagingtheouter log=of the-upwardlyfacing channel: under tension; saidbottom. coil. also; beingunder axialstress whereby (the spring, is held iniupright position withthe-portionthereof;- diametr'really opposed to the portion engaging said-loop-undertension engagement; with the top. of the =web of the: dom'iwardly=facing; channel;

2. In a springstructura the' combination of a supporting strip? having;312 downwardly facing channel: and-an: upwardly facing channel; thewehof. the downwardiy-facing channel having a loop; struck', up:therefromand the? vertical leg common .to saidichannelmhaving a holetherein :7.

longitudinally; spaced. relative, to I said: loop, and minimally coiledspring; the -bottomcoil of; which terminatesin arr angularly. disposedportion, the bottom-.coil :of -the springbeing threaded through said-1loop; with itsa-ngularity disposed terminal Mon disposedthrough saidholewithitsangle mngthezedgeeof thechole:adjacent'thefloop under: tension;said bottom coil between said loop andrholewalsoaengagingtthe outer leg.of the'aup- Iii) wardly facing channel under tension, said bottom coilalso being under axial stress whereby the spring is held in uprightposition with the portion thereof diametrically opposed to the portionengaging said loop under tension engagement with the top of the web ofthe downwardly facing channel.

3. In a spring structure, the combination of a supporting strip having?a: downwardly facing channel and an upwardly facing channel, the Web ofthe downwardly facing channel having a loop struck up therefrom and thevertical leg common to said channels having a hole thereinlongitudinally spaced relative to said loop, and a helieally'coiledspring, the bottom coil of which terminatesina straight angularlydisposed portion of alength corresponding approximately to the' widthof, the downwardly facing channel, the bottom coil of the spring beingthreaded through said loop with its angularly disposed terminal portiondisposedithrough said hole-with its. angle engaging the edge of the holeadjacent the loop and its tip engaging theinneri sideofzthe outer leg.of the downwardlyv facing channel, said bottomcoil betweenlsaid loopand. hole also engagingthe outer leg. of the upwardlyfacing channel.

4. In a spring structure, the combination of a supporting strip. havinga. downwardlyfacing channel and an, upwardly facing. channel, the web ofthee-downwardly facingchannel having: a loop. struck. up therefrom.vand. the vertical leg common to said channels having a. hole thereinlongitudinally spacedlrelative to said loop, and a helicallycoiledspring, the bottom=eoil of which terminates in an angularlyydisposed portion, the bottom coilof the .springheing threaded throughsaid loop. with its angularly disposed terminal portion disposed.througlisaid hole-with its. angle engaging the edge of the holeadjacent-theloop, the portion of said bottom coil extending betweensaid. loop and.. hole alsov engaging under stress the outerleg of the.upwardly facing. channel.

VITO ASARO.

